Spring-wheel



M. MATHIEs-EN. SPRING WHEEL;

APPLICATION FILED OCT. 16. I920.

Patented Feb. 8, 1921.

2 SHEETS SHEET l.

SPRING WHEELD APPLICATION mw om. le. 1920..

1,367,917, 2mm web. 8,1921.-

UNITED STATES re'rnn'r cerise.

MARIUS VMATHIESEN, OF CHICAGO, ILLINOIS, ASSIGNOROF ONE-HALF TO FRANK E.

SHORTESS, OF CHICAGO, ILLINOIS. I

SPRING-WHEEL.

Specification of Letters Patent.

Patent-.ea nel. s, 1921.

Application led October 16, 1920. Serial No. 417,532.

Be it known that I, MAniUs MATHinsisN, a citizen oi' the United States ot America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Spring-lVheels, of which the following is a specification.

This inif'ention relates to spring wheels of the rigid body type provided with a yielding tread member or tire, as opposed to the oating hub type. Heretotore wheels have been made with tread shoes 'flexibly connected and yieldingly mounted on the wheel body, but such wheels have usually been complicated in construction and expensive to manufacture and maintain. y f

The main objects of this invention are to provide an improved form of yielding wheel tire or tread of sectional character, and pai* ticularly an improved form of tread shoe and means :tor yieldingly mounting and connecting same for use.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which- Figure l is a side elevation ot' one quadrant or section of the wheel.

Fig. 2 is a perspective view of the inner side' of a pair of demountable tire shoes and their attaching means, said shoes being a` modification of those shown in side elevation on the wheel of Fig. l, and illustratinghow the two lobes. front and rear, may be formed in reverse position respecting the peripheral center line yof the tire.

Fig. 3 is an outer face plan ot a shoe such as shown in Figs. l and 2.

Fig. 4 is a face view of a series o f telly plates, the edges of which are shown in Fig. l, developed in a plane.

Fig. 5 is a section on the line 5-5 of Fig. 2 through the shoe pivot.

Fig. 6 is a section on the line 6--6 of 5. ig. 7 is a perspective view of the outer tace of the frame of another form of shoe.

Fig. 8 is a face view of a pair of demounc able tire shoes of still another form.

Fig. 9 is a section at 9 9 on Fig. 3. l

Fig. 10 is a fragmentary section on the line 10-'10 of Fig. 7. y y

In the embodiment shown in the drawings, the wheel body may be of the usual rigid construction, comprising a hub l, spokes 2, and telly 3 provided with a 'telly band 3, all permanently joined together in fixed relation. The wheel body is formed and adapted on the outer face oi the telly 3 t? receive the support of the yielding tread rim or multiple shoe tire i hereinafter more' .fully described. For this purpose the telly 1s provided, on the outward face of its baud 3, with a series of bearing members or guide plates 5, preferably made of' sheet metal and provided with outstanding studs 6 adapted t0 receive the inner ends of suitable yielding means such as helical springs 7. (See Fig.'y l.) Said plates are secured to the tellv bv suitable rigid fastenings, such as screws@ or the like. The tread shoes 9 included in the tire 4 may be formed and arranged in diiierent ways as will be explained, but are in each instance arranged in limited spaced relation peripherally so as to accommodate substantially free and independent movenient in response to irregularities in the road-bed.

In the forni shown in Fig.' l the tread shoes 9 `are formed and arranged to overlap one another laterally, each shoe, however being formed in this instance to extend the full width of the tire. (See Figs. 2 and For this puropse each shoe, which may Abe in the form of a metal casting, comprises a pair of lobes 9 and 9 disposed on opposite sides of the peripheral center line of the tread rim, one lobe extending forwardly and the other backwardly'from the transverse center line l0 of' the shoe, (see Fig. 3), said lobes preferably being oit likev size and rectangular shape, with corrugat-ions or grooves 1l in their tread surfaces to better grip the road-bed. Each of said shoes is provided centrally with downwardly projecting ymeans l2 preferably in the form of spaced lugs or arms l2 and 12 which are transversely perforated in alinement at their projecting ends as at 13, to receive a pivot member Iii, whereby it may be secured to corresponding upstanding lugs or arms on the tire chain 15 hereinafter' described. The shoe 9 is in balance respecting the lug l2, being substantially symmetrical in relation thereto. Inwardly facing lugs i6 are provided on the inner faces of said slices to register with the telly plate lugs 6 above mentioned, for securing the springs 7 in place, said lugs being receivedby the opposite ends oi said springs respectively in coaxial alinenient. In order torp'revent Y shoes 9 are mounted.

tipping or lateral bending of the springs `they Aare formed to seat squarely on their ends againstthe plates and shoes 9, and the studs 6 and 1G project well'into the ends` Uien the wheel is assembled, the chain is held in tension by the outward stress ofthe springs T which serve to hold the shoesV in uniform relation so long as no external forces are brought to bear on the wheel. ln operation, however, the weight of the load on the wheel rolling along` the road-bedovercomes to a greater 'or less degree the expansive force of the downwardly acting springs, especially in running over fsuch smaller obstacles as pebbles and small stones, andthe active part of the tire, lthat is to say, the instant bearing shoe, or group of two or ythree shoes, is forced upward somewhat. By reason of the said chain'and the coacting springs disposed as stated, the

weight is distributed over a relatively large part of the lower half of the wheel periphery, so that when the wheel encounters any slight Vobstruction in the road, thefcorresponding shoe orpart of the tread rim is depressed suiliciently to permit the wheel to passV without materially affecting the gen eral rectilinear movement of the wheel a whole.V Y Y VThe pivotal connection 11i-12 toi' 'the lever armv 19 is formed to provide ample clearance vspace .onv allsides of the periorated tip of arm '19, so as to give plenty of room for free 'play of the shoe as it is caused to rock 'about somewhat in various directions Vcorrespc'mding' to chance irregularities in the road-bed. The pivotV pin 1i' fits Vsnugly in the perforations 13, but readily removable and interchangeable to facilitate Y interchanging and renewing the shoes. Sai d pin 14 is beveled inward somewhat at the center where the. loose fitting arm 19 taires its bearing'so that the outward tension of said arm, urged by the spring 7, will tend toV lock thepivot in place and prevent acci-A dental Withdrawal when the wheel is in use.

TheV arms 18 are pivotally connected, be-

Y ing forked at 'one end and merely perforated 'at the other end, Vand theV forlrs being pfovi'd'ed each with a pivot to lit in the end ofthe next adjacent link.

In the .form of shoe 20 .illustrated in-Fgsl ing adapted 'for the latter purpose,

7 and 10, each lobe 20 is provided on its outward lrace with a depression 20, adapted to receive interchangeable wear blocks 21, which vblocks may be made of wood or other suitable material and may be secured vin place'by any convenient means, or they may be ifoi'med oi material suitable "for mounting,

molding, oi' vulcanizing in place, rubber"be- Otherwise the shoes 20 may be similar in 'torni and character Vto those shown in Fig. 2.

ln the orm shown in Fig. 8, the tread rim comprises a series ofreetangular shoes 22 arranged in peripheral series, mounted on a chain as above describefl. {dai-.il shoes 22 are provided with studsQl cori ingl substantialli.,v with studsfltfi of l' for coaction with si'itable springs ,sub tially as above described. CSaid shoes are also provided with lugs similar to those on the above-mentioned shoes 9 Ator mountl ing` lon the chain 1,5. Y

The forms shown in Figs. 2 and 'T are especially adapted` for heavy trucks, though they may be made light and adapted t'or passenger vehicles it desired. The ,torni shown in Fig. 8, however, is comparatively narrow .and is best adapted for the lighter wheels of runabouts'and light weight auto# mobiles. y Y Y Y Although only a few of the most useful. forms ot embodiment of .this invention are herein shown and described, it is to be understood that numerous details of Vtheconstructions shown and described may be altered or omitted without departing` from; the spirit of ,this inventionlas definedV by the following claims. i

Iclaiin: 1. A wheel, comprising a rigid body and a yielding tread member, said tread member comprising a series ofshoes disposed about the .periphery of the" wheel in suiiicien'tly spaced relation `for mutual 'direct independ-V 'Y Y .llO

ence of movement, a chain-disposed between the wheel body and said shoes and including a series of links, said links having outwardly projectingmeans whereon the shoes arecentrally mounted, and outwardly acting yielding means disposed between said wheel body andV opposite endsA of said slices respectively.

2. In a wheel, a chain comprising a ser s of links each provided with an outstanding arm', a tread shoe mounted pivotally on said arm, and outwardly acting resilient means disposed between the wheel body and said shoe onv opposite; sides oi? said 3. Arwheel of theVv character described,

comprising a tread shoe having on its inner Y side a Vcentral* bearing part, and a coacting support member for lsaid shoe formed and adapted for? limited fl'reedomV oi mutual Y movement for tilting of the shoe in any direction, said bearing part comprising a pair or"Y armsspaced apart with a tniedigally4 restricted longitudinally removable pivot member connecting said arms, and said support member being perforated to receive said pivot member and fitting loosely between said arms, and said shoe being Jformed and adapted at a. plurality ot points on opposite sides of said bearing part to engage yielding supports.

4l. In a Wheel, a series of tread shoes each adapted ior pivotal mounting and having centrally disposed on its inner side a pair or arms which are perforated in registry, a pivot for said arms, tension means for connecting the pivots of adjacent shoes, and outwardly acting resilient means disposed between the Wheel body and said shoes in co active relation thereto.

5. In a wheel, a series of tread shoes each adapted for pivotal mounting and having centrally disposed on its inner side a pair of arms Which are perforated in registry, a

pivot for said arms, tension means for connecting the pivots of adjacent shoes, and outwardly acting resilient means disposed between the Whole body and said shoes in coactive relation thereto, said tension means being in the form of a chain, the links of which are provided each with an outstanding arm perforated to receive said pivot, and said pivot being beveled medially, whereby it is retained in place by the pressure thereon of the respective link due to the action of said resilient means.

6. In a spring Wheel, a chain comprising a series of angular links disposed in a plane perpendicular to the Wheel axis with one arm of each link projecting outward and connected to the tread member.

Signed at Chicago this 14th day of October, 1920.

MARIUS MATHIESEN.

It is hereby Certifiedl that in Letters Patent No. 1,367,917, granted February 8,

1921, upon the application of Marius Mathiesen, of Chicago, Illinois, for an improvement in Spring-Wheels, an error appears in the printed. specification requiring correction as follows: Page 3, line 25, claim 5, for the Word Whole read wheel; and that the said Letters Patent kshould be read With this correction therein that the same may conform to the record of the ease in the Patent Oflioe.

Signed and sealed this 8th day of March, A.. D., 1921.

[SEAL] M. H. COULSTON,

Commissioner of Patents. Cl. 152-8. 

